Replace or not Replace AOS

[Rich XTR]

My 2000 boxster s has 53000 miles and original AOS. Engine is out of the car....should i replace it now with easy access or is it easy enough when the engine is in the car to replace? Not having any issues with AOS at this time.

[Geof3]

If the motor is out, I'd probably go ahead and do it. Never fails, as soon as the motor goes back in, it dies...

[Rich XTR]

Yea....its only $100 and i would be pissed if i had to change it right away when i put the engine back after having great access now.

[rfuerst911sc]

Unfortunately no guarantee that the new one will be better then the old one you are removing . There are enough stories out there of new AOS failing immediately or shortly after being installed . In my opinion SOMEONE has to invent the better mouse trap for the dreaded AOS but playing with emission stuff can get expensive for R+D and patent paperwork . Having said all that I too would install a new one while you have the engine out .

[JFP in PA]

The real problem child in this equation is the aftermarket versions which tend to be either DOA or short lived. Get the latest factory unit.

[Ciao]

AOS is a recurring problem, replacing it now, while it's easy access would reset the clock to zero